Mitsubishi Lancer (4A9 engine). Manual - part 310

REFRIGERANT LINE

HEATER, AIR CONDITIONER AND VENTILATION

55A-121

REFRIGERANT LINE

REMOVAL AND INSTALLATION <PETROL 
ENGINE>

M1552006402840

Pre-removal and Post-installation Operation
Discharging and Recharging refrigerant (Refer to )

AC900347

7.0 ± 3.0 N·m

N

7

8

N

N

4.9 ± 0.9 N·m

6

13 ± 1 N·m

3

High-pressure
Side service valve

2

N

4.9 ± 0.9 N·m

N

4

N

AF

Low-pressure
Side service valve

1

5

5

-Pipe coupling

A/C compressor oil: SUN PAG 56 or S10X

N

8

9

9

9

8

8

9

4.0 ± 2.0 N·m

4.0 ± 2.0 N·m

25 ± 4 N·m <1600>
10 ± 2 N·m <1800, 2000>

4, 5, 6, 7, 8

Expansion valve removal steps 

1.

Heat protector

<<

A

>>

2.

Expansion valve
Refrigerant line removal steps 

<<

A

>>

3.

Flexible suction hose

<<

A

>>

4.

Liquid pipe B

•

Air Cleaner Intake Duct Removal 
and Installation (Refer to GROUP 
15 

− Air Cleaner  <4A9, 4B1, 4J1>)

•

Headlamp support panel cover 
Removal and Installation (Refer to 
GROUP 51, Front bumper and 
radiator grille ).

<<

A

>>

5.

Liquid pipe A

<<

A

>>

6.

Flexible discharge hose

<<

A

>>

7.

A/C pressure sensor

8.

O-ring

REMOVAL SERVICE POINT

<<A>> HOSE AND PIPE REMOVAL

CAUTION

Use the plug which is not breathable because A/
C compressor oil or receiver have high hygro-
scopicity.
Plug the nipple of condenser, compressor, and 
expansion valve to prevent the entry of dust and dirt.

Refrigerant line removal steps 

REFRIGERANT LINE

HEATER, AIR CONDITIONER AND VENTILATION

55A-122

REMOVAL AND INSTALLATION <DIESEL 
ENGINE>

M1552006402862

Pre-removal and Post-installation Operation
Discharging and Recharging refrigerant (Refer to )

AC900635

7.0 ± 3.0 N·m

N

7

9

N

N

4.9 ± 0.9 N·m

6

3

High-pressure
Side service valve

2

N

4.9 ± 0.9 N·m

N

4

N

25 ± 4 N·m

AB

Low-pressure
Side service valve

1

5

4, 5, 6, 7, 8

-Pipe coupling

A/C compressor oil: SUN PAG 56 or S10X

N

9

9

9

9

9

9

9

4.0 ± 2.0 N·m

6

9

N

9

25 ± 4 N·m

8

Expansion valve removal steps 

1.

Heat protector

2.

Expansion valve cover

<<

A

>>

3.

Expansion valve
Refrigerant line removal steps 

<<

A

>>

4.

Flexible suction hose

<<

B

>>

>>

A

<<

5.

Liquid pipe B

•

Air Cleaner Intake Duct Removal 
and Installation (Refer to GROUP 
15 

− Air cleaner  <4N1>).

•

Headlamp support panel cover 
Removal and Installation (Refer to 
GROUP 51, Front bumper and 
radiator grille ).

•

Windshield washer tank assembly 
Removal and Installation (Refer to 
GROUP 51, Windshield washer ).

<<

B

>>

>>

A

<<

6.

Liquid pipe A

<<

A

>>

7.

Flexible discharge hose

<<

A

>>

8.

A/C pressure sensor

9.

O-ring

REMOVAL SERVICE POINT

<<A>> HOSE AND PIPE REMOVAL

CAUTION

Use the plug which is not breathable because A/
C compressor oil or receiver have high hygro-
scopicity.
Plug the nipple of condenser, compressor, and 
expansion valve to prevent the entry of dust and dirt.

Refrigerant line removal steps 

REFRIGERANT LINE

HEATER, AIR CONDITIONER AND VENTILATION

55A-123

<<B>> PIPE REMOVAL

CAUTION

Use the plug which is not breathable because A/
C compressor oil or receiver have high hygro-
scopicity.

AC702826

AC702827

AC800246

Lock piece

Lock piece

Claw

Section A-A

A

A

AB

1. Lift the claw of lock piece and pull out to the 

direction of the arrow shown.

AC800285

Claw

AB

Male side

Female side

2. Lift the claw of joint and turn the male side to the 

direction of the arrow to release the lock, and 
disconnect the pipe.

INSTALLATION SERVICE POINT

>>A<< PIPE INSTALLATION

AC702823

1. Connect the pipe and the joint.

AC702824AC

Claw

Male side

Female side

2. Turn the male side to the direction of the arrow to 

lock.

AC702825

3. Insert the lock piece to prevent the reverse 

rotation.
NOTE: Be careful that the colour of lock piece is 
different depending on the type of piping 

DUCTS

HEATER, AIR CONDITIONER AND VENTILATION

55A-124

DUCTS

REMOVAL AND INSTALLATION

M1553001001007

AC800087

1

2

3

4

6

7

9

9

8

AB

5